Finding the Fourth Proportional to 92,158.56, 138,276.72 and 54,790.02

Step by Step Solution

1. Step 1: Write the proportion equation
   92,158.56 : 138,276.72 = 54,790.02 : x
2. Step 2: Convert to fraction form
   92,158.56/138,276.72 = 54,790.02/x
3. Step 3: Cross multiply
   92,158.56x = 138,276.72 × 54,790.02
4. Step 4: Simplify right side
   92,158.56x = 7,576,184,254.33
5. Step 5: Solve for x
   x = 7,576,184,254.33/92,158.56
6. Step 6: Final answer
   x = 82,208.14